Answer:
Substances
0 (most acidic) Hydrochloric acid (HCl)
1 Stomach acid
2 Lemon juice
3 Cola, beer, vinegar.
Examples of alkaline are:sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide etc
C. Desert
A. The tilt of the Earth's axis as it circles the Sun.
Answer:
D.
Explanation:
Nonnative species is defined as the introduction of an alien species, foreign species or exotic species to a new region and affect the native species.
The exampe of nonnative species is introduction of water hyacinths from Asia in the United States which is affecting the native species and making the ecosystem crowdy.
Introduction of non-native species can disturb the balance of an already-established ecosystem by the native species including plants and animals.
Hence, the correct option is D.
Centrioles are organelles that are found only in animal cells and they produce D) flagellum and centrosomes.
Centrosomes help organize the microtubules present in the animal cell during cell division and also regulate the cell cycle.
Furthermore, the flagellum produced by centrioles in sperm cells help the cell move towards the egg and cause fertilization.
